The Foreign Office has announced that Foreign Secretary Jack Straw will join the delegation to the camp.

Prince Harry should see for himself "the results of the hated symbol he so foolishly and brazenly chose to wear", said Rabbi Marvin Hier, founder of Jewish human rights group the Simon Wiesenthal Center.

The UK's Chief Rabbi Jonathan Sacks said it was imperative that the lessons of the Holocaust and World War II were not only taught, but understood.

He went on to say that wearing a swastika was in extremely poor taste but added: "I note that Prince Harry has recognised this."

Prince Harry's costume gaffe has also prompted suggestions from some that he should not be allowed to enrol at Sandhurst military academy.

The Ministry of Defence has said it will not affect his place.

It is the latest in a series of stories involving Prince Harry - who is third in line to the throne - which have earned him a media reputation as the "party prince".